Radiation Protection Dosimetry Advance Access originally published online on January 17, 2007
Radiation Protection Dosimetry 2006 122(1-4):106-109; doi:10.1093/rpd/ncl443
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Radiation damage to DNAprotein specific complexes: estrogen response elementestrogen receptor complex
tísová1,3
1 Department of Radiation Dosimetry, Nuclear Physics Institute AS CR, Na Truhlá
ce 39/64, 180 86, Praha 8, Czech Republic
2 Centre de Biophysique Moléculaire CNRS, rue Charles Sadron, 45100 Orléans Cedex 2, France
3 Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, CTU Prague, B
ehová 7, 115 19, Praha 1, Czech Republic
* Corresponding author: davidkova{at}ujf.cas.cz
| Abstract |
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The exposure of a DNAprotein regulatory complex to ionising radiation induces damage to both partner biomolecules and thus can affect its functioning. Our study focuses on a complex formed by the estrogen response element (ERE) DNA and the recombinant human estrogen receptor alpha (ER), which mediates the signalling of female sex hormones, estrogens. The method of native polyacrylamide retardation gel electrophoresis is used to study the stability of the complex under irradiation by low LET radiation (60Co gamma rays) and the ability of the separately irradiated partners to form complexes. The relative probabilities of ERE DNA strand breakage and base damages as well as the probabilities of damages to the ER binding domain are calculated using the Monte Carlo method-based model RADACK.